X-ray diffraction study of one-dimensionally disordered structure formation in Co-based alloys |
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| Affiliation: | 1. Laboratory of Biocrystallography and Computational Molecular Biology, Department of Physics, Periyar University, Salem-636 011, India;2. Department of Chemistry, Selvamm Arts and Science College, Namakkal-637 003, India;1. Xi''an Key Laboratory of Sustainable Energy Materials Chemistry, Department of Applied Chemistry, School of Science, Xi''an Jiaotong University, Xi''an 710049, China;2. China Academy of Engineering Physics, Institute of Chemical Materials, Mianyang 621999, China |
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| Abstract: | Formation of one-dimensionally disordered (ODD) structures with non-random distribution of growth stacking faults (SF's) in Co-based alloys has been investigated by X-ray diffraction. It has been found that the usual process of growth of coarse crystals with fairly perfect h.c.p. lattice in pure Co is substituted for the accumulation of numerous thin non-randomly distributed lamellae with a h.c.p. structure in doped Co. This results in the growth SF's formation as isolated cubic type planes, clamped by neighbouring lamellae. The character of the SF's distribution in the final ODD structure is determined by ordering of the lamellae in the initial stages of the transformation. |
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